User`s guide

Chapter 5 - I/O Commands
COMBINED POSITION MESSAGE (@@Ga)
Motorola Binary Format
Query Current Position Command:
@@GaxxxxxxxxxxxxxC<CR><LF>
where:
xxxxxxxxxxxxx = 13 hex bytes: 0xFF
C = 0xD9
Message length: 20 bytes
Complete hex string to query current Combined Position:
0x40 40 47 61 FF FF FF FF FF FF FF FF FF FF FF FF FF D9 0D 0A
Change Current Position Command:
@@GaaaaaoooohhhhtC<CR>LF>
where:
aaaa = latitude in mas -324,000,000..+324,000,000
(-90º to +90º)
oooo = longitude in mas -648,000,000..+648,000,000
(-180º to +180º)
hhhh = height -100,000..1,800,000cm
(-1000 to 18000 m)
t = height type 0 = GPS, 1 = MSL
(always 0 with M12+ receivers)
C = checksum
Message Length: 20 bytes
Response to above command:
@@GaaaaaoooohhhhtC<CR>LF>
where:
aaaa = latitude in mas -324,000,000..+324,000,000
(-90º to +90º)
oooo = longitude in mas -648,000,000..+648,000,000
(-180º to +180º)
hhhh = height -100,000..1,800,000cm
(-1000 to 18000 m)
t = height type 0 = GPS, 1 = MSL
(always 0 with M12+ receivers)
C = checksum
Message Length: 20 bytes
Motorola GPS Products - M12+ User's Guide Revision 6.X 09FEB05
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